content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
   * Other names may be trademarks of their respective owners.]
   *
   * -------------------------------
   * StackedXYAreaRenderer2Tests.java
   * -------------------------------
   * (C) Copyright 2005-2008, by Object Refinery Limited and Contributors.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   -;
   *
   * Changes
   * -------
   * 06-Jan-2005 : Version 1 (DG);
   * 22-Aug-2006 : Added testDrawWithEmptyDataset() method (DG);
   * 30-Nov-2006 : Extended testEquals() (DG);
   * 22-Apr-2008 : Added testPublicCloneable (DG);
   *
   */
  
  package org.jfree.chart.renderer.xy;
  
  import org.jfree.chart.ChartFactory;
  import org.jfree.chart.JFreeChart;
  import org.jfree.chart.axis.NumberAxis;
  import org.jfree.chart.plot.XYPlot;
  import org.jfree.chart.util.PublicCloneable;
  import org.jfree.data.Range;
  import org.jfree.data.xy.DefaultTableXYDataset;
  import org.jfree.data.xy.TableXYDataset;
  import org.junit.jupiter.api.Test;
  
  import java.awt.Graphics2D;
  import java.awt.geom.Rectangle2D;
  import java.awt.image.BufferedImage;
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.ObjectInput;
  import java.io.ObjectInputStream;
  import java.io.ObjectOutput;
  import java.io.ObjectOutputStream;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNotSame;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertSame;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  /**
   * Tests for the {@link StackedXYAreaRenderer2} class.
   */
  public class StackedXYAreaRenderer2Test  {
  
  
  
  
  
      /**
       * Test chart drawing with an empty dataset to ensure that this special
       * case doesn't cause any exceptions.
       */
      @Test
      public void testDrawWithEmptyDataset() {
          JFreeChart chart = ChartFactory.createStackedXYAreaChart("title", "x",
                  "y", new DefaultTableXYDataset());
          XYPlot plot = (XYPlot) chart.getPlot();
          plot.setRenderer(new StackedXYAreaRenderer2());
  
              BufferedImage image = new BufferedImage(200 , 100,
                      BufferedImage.TYPE_INT_RGB);
              Graphics2D g2 = image.createGraphics();
              chart.draw(g2, new Rectangle2D.Double(0, 0, 200, 100), null, null);
              g2.dispose();
  
      }
  
      /**
       * Test that the equals() method distinguishes all fields.
       */
      @Test
      public void testEquals() {
          StackedXYAreaRenderer2 r1 = new StackedXYAreaRenderer2();
          StackedXYAreaRenderer2 r2 = new StackedXYAreaRenderer2();
          assertEquals(r1, r2);
          assertEquals(r2, r1);
  
          r1.setRoundXCoordinates(!r1.getRoundXCoordinates());
          assertFalse(r1.equals(r2));
          r2.setRoundXCoordinates(r1.getRoundXCoordinates());
          assertEquals(r1, r2);
      }
  
      /**
       * Two objects that are equal are required to return the same hashCode.
       */
      @Test
      public void testHashcode() {
          StackedXYAreaRenderer2 r1 = new StackedXYAreaRenderer2();
          StackedXYAreaRenderer2 r2 = new StackedXYAreaRenderer2();
          assertEquals(r1, r2);
          int h1 = r1.hashCode();
          int h2 = r2.hashCode();
          assertEquals(h1, h2);
      }
  
      /**
       * Confirm that cloning works.
       */
      @Test
      public void testCloning() throws CloneNotSupportedException {
          StackedXYAreaRenderer2 r1 = new StackedXYAreaRenderer2();
          StackedXYAreaRenderer2 r2 = (StackedXYAreaRenderer2) r1.clone();
          assertNotSame(r1, r2);
          assertSame(r1.getClass(), r2.getClass());
          assertEquals(r1, r2);
      }
  
      /**
       * Verify that this class implements {@link PublicCloneable}.
       */
      @Test
      public void testPublicCloneable() {
          StackedXYAreaRenderer2 r1 = new StackedXYAreaRenderer2();
          assertTrue(r1 instanceof PublicCloneable);
      }
  
      /**
       * Serialize an instance, restore it, and check for equality.
       */
      @Test
      public void testSerialization() throws IOException, ClassNotFoundException {
          StackedXYAreaRenderer2 r1 = new StackedXYAreaRenderer2();
  
              ByteArrayOutputStream buffer = new ByteArrayOutputStream();
              ObjectOutput out = new ObjectOutputStream(buffer);
              out.writeObject(r1);
              out.close();
  
              ObjectInput in = new ObjectInputStream(
                      new ByteArrayInputStream(buffer.toByteArray()));
          StackedXYAreaRenderer2 r2 = (StackedXYAreaRenderer2) in.readObject();
              in.close();
  
          assertEquals(r1, r2);
      }
  
      /**
       * Check that the renderer is calculating the range bounds correctly.
       */
      @Test
      public void testFindRangeBounds() {
          TableXYDataset dataset
                  = RendererXYPackageTests.createTestTableXYDataset();
          JFreeChart chart = ChartFactory.createStackedXYAreaChart(
                  "Test Chart", "X", "Y", dataset);
          XYPlot plot = (XYPlot) chart.getPlot();
          StackedXYAreaRenderer2 renderer = new StackedXYAreaRenderer2();
          plot.setRenderer(renderer);
          NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
          Range bounds = rangeAxis.getRange();
          assertTrue(bounds.contains(6.0));
          assertTrue(bounds.contains(8.0));
  
          // try null argument
          assertNull(renderer.findRangeBounds(null));
  
          // try empty dataset
          assertNull(renderer.findRangeBounds(new DefaultTableXYDataset()));
      }
  
  }
  